I just started with Bitcoin and it's a bit confusing. Naturally, after creating a wallet, I want to buy bitcoins and load the wallet. The first thing I'm asked for is my wallet address. How do I find that, please? I don't see it immediately when I open the wallet or any of the tabs.
Thanks.

Welcome to the community.
The best advise is to start reading a lot about bitcoin. Just have a look at the beginners section here.
And first start transferring with small amounts just to get used to hit and to learn to know what you are doing exactly.
And please make backups of your wallets.